180= 125*( 1+a)？

a=20%

125*( 1+20%)? =2 16

(2) X outdoor parking lots and Y indoor parking lots.

200 x+ 1000y = 30000(x+5y = 150)

2y≤x≤2.5y

x= 150-5y

2y ≤150-5y ≤ 2.5y ∴ 20 ≤ y ≤ 21and then find the corresponding x.

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